ALE smoothness: in and outside semiconductor industry

KJ Kanarik, S Tan, T Lill, M Shen, Y Pan… - US Patent …, 2018 - Google Patents
Methods of etching and smoothening films by exposing to a halogen-containing plasma and
an inert plasma within a bias window in cycles are provided. Methods are suitable for …

Angled implantation for removal of thin film layers

ML Hattendorf, JK Brask, JS Sandford… - US Patent …, 2009 - Google Patents
Dry etching using tools such as plasma provide directional etching. However, Such etching
methods lack selectivity and may etch into materials below those desired to be etched, or the …

Plasma etching process control

P Schoenborn - US Patent 5,362,356, 1994 - Google Patents
A passive, in-line method of monitoring film removal (or deposition) during plasma etching
(or deposition) based on interference phenomena is disclosed. Plasma emission intensity is …

Techniques for forming angled structures for reduced defects in heteroepitaxy of semiconductor films

S Srinivasan, FA Khaja, S Ruffell, J Hautala - US Patent 9,287,123, 2016 - Google Patents
In one embodiment, a method for etching a Substrate includes providing a reactive ambient
around the Substrate when a non-crystalline layer is disposed over a first crystalline mate …

Solvent free photoresist strip and residue removal processing for post etching of low-k films

HT Nguyen, MN Kawaguchi, MB Naik, LQ Xia… - US Patent …, 2004 - Google Patents
In one aspect of the invention, a method for Stripping photoresist on a low-k film is provided.
Generally, after the bulk of the photoresist is removed using a dry Strip process, the residue …

Enhanced stripping of low-k films using downstream gas mixing

HH Goto, D Cheung, PK Sinha - US Patent 7,202,176, 2007 - Google Patents
The present invention pertains to methods for removing unwanted material from a work
piece. More specifically, the invention pertains to stripping photo-resist material and …

Metal removal with reduced surface roughness

X Wang, CUI David, A Wang, NK Ingle - US Patent 9,659,791, 2017 - Google Patents
Methods are described for etching metal layers that are difficult to volatize. Such as cobalt,
nickel, and platinum to form an etched metal layer with reduced surface roughness. The …

Anisotropic, fluorine-based plasma etching method for silicon

F Laermer, A Schilp - US Patent 6,303,512, 2001 - Google Patents
A method for anisotropic plasma etching of laterally defined patterns in a silicon substrate is
described. Protective layers made of at least one silicon compound with a second reaction …

Plasma etching using hydrogen bromide addition

DC Hartman - US Patent 4,490,209, 1984 - Google Patents
The disclosure relates to a plasma etch chemistry which allows a near perfectly anisotropic
etch of silicon. A Cl-containing compound such as HCl has HBr added thereto, readily …

Tantalum-containing material removal

X Wang, N Yoshida, SN Barman, NK Ingle - US Patent 10,727,080, 2020 - Google Patents
Methods are described herein for etching tantalum-containing films with various potential
additives while still retaining other desirable patterned substrate portions. The methods …